Seat-of -the Pants: A 28-month Perspective
Pig9r;9871Jamie just changed to the K&N said:
I like K&N's and think that a little more air flow allows for quicker revs.
The K&N importer modestly claims, on the top of unverifiable filtering benefits and lifetime (?) durability, a power gain of "up to" 2 to 3 HP's for the single, under-the-seat (vs 3 individual, top-of-the-engine units) K&N replacement box. That's however for a standard
Rocket. Mine, with both a snorkel-less Corbin seat, Mad Dog pipes, the standard cat litter (*) and the TOR tune (which happens to be a perfect combo in terms of idling speed stability, virtual elimination of decel popping, etc.) FEELS like it gained far more "pull" than that. And then, there is the pleasantly throatier intake music that I already reported.
(*) As far as the cat litter goes, I have found, after a bit of experimentation, that removing it and replacing it with the OEM by-pass increases exhaust loudness to a Godawful level (IMO), for both the rider and the neighborhood, without
increasing real horsepower. And no
off-the-shelf OEM (vs Power Commander-type) tune that I know of is meant to /seems to adjust engine e:management for that cat deletion. Symptoms (from my RCE club members' self-appointed guinea pigs
) ? Plenty of backfiring, erratic idling speed and no responsiveness whatsoever to the so-called 11' or 12' "passive" tune.